refactor(convex): separar heartbeat em tabela dedicada para evitar OOM

- Criar tabela machineHeartbeats para armazenar lastHeartbeatAt separadamente
- Modificar heartbeat para so atualizar machines quando ha mudancas reais
- Atualizar queries listByTenant e getById para usar nova tabela
- Reducao drastica de versoes de documentos criadas a cada heartbeat

Antes: ~54 versoes por maquina (3524 linhas para 65 maquinas)
Agora: heartbeat atualiza documento leve, machines so muda com dados novos

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

convex/_generated/server.d.ts

@@ -10,7 +10,6 @@
 
 import {
   ActionBuilder,
-  AnyComponents,
   HttpActionBuilder,
   MutationBuilder,
   QueryBuilder,
@@ -19,15 +18,9 @@ import {
   GenericQueryCtx,
   GenericDatabaseReader,
   GenericDatabaseWriter,
-  FunctionReference,
 } from "convex/server";
 import type { DataModel } from "./dataModel.js";
 
-type GenericCtx =
-  | GenericActionCtx<DataModel>
-  | GenericMutationCtx<DataModel>
-  | GenericQueryCtx<DataModel>;
-
 /**
  * Define a query in this Convex app's public API.
  *
@@ -92,11 +85,12 @@ export declare const internalAction: ActionBuilder<DataModel, "internal">;
 /**
  * Define an HTTP action.
  *
- * This function will be used to respond to HTTP requests received by a Convex
- * deployment if the requests matches the path and method where this action
- * is routed. Be sure to route your action in `convex/http.js`.
+ * The wrapped function will be used to respond to HTTP requests received
+ * by a Convex deployment if the requests matches the path and method where
+ * this action is routed. Be sure to route your httpAction in `convex/http.js`.
  *
- * @param func - The function. It receives an {@link ActionCtx} as its first argument.
+ * @param func - The function. It receives an {@link ActionCtx} as its first argument
+ * and a Fetch API `Request` object as its second.
  * @returns The wrapped function. Import this function from `convex/http.js` and route it to hook it up.
  */
 export declare const httpAction: HttpActionBuilder;